package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundsTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService productAttrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * TODO 高级部分完善
     * 适合使用seata的AT 不需要高并发
     * @param vo
     */
//    @GlobalTransactional
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //1.保存spu基本信息 pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(spuInfoEntity);
        //2.保存Spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity spuInfoDescEntity = new SpuInfoDescEntity();
        spuInfoDescEntity.setSpuId(spuInfoEntity.getId());
        spuInfoDescEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(spuInfoDescEntity);
        //3.保存Spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuInfoEntity.getId(), images);
        //4.保存Spu的规格参数 pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(item -> {
            ProductAttrValueEntity productAttrValueEntity = new ProductAttrValueEntity();
            productAttrValueEntity.setAttrId(item.getAttrId());
            AttrEntity attrEntity = attrService.getById(item.getAttrId());
            productAttrValueEntity.setAttrName(attrEntity.getAttrName());
            productAttrValueEntity.setAttrValue(item.getAttrValues());
            productAttrValueEntity.setQuickShow(item.getShowDesc());
            productAttrValueEntity.setSpuId(spuInfoEntity.getId());
            return productAttrValueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttr(collect);
        //5.保存Spu的积分信息 gulimall_sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundsTo spuBoundsTo = new SpuBoundsTo();
        BeanUtils.copyProperties(bounds, spuBoundsTo);
        spuBoundsTo.setSpuId(spuInfoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundsTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }
        //6.保存当前Spu对应的所有Sku信息：
        //6.1 sku的基本信息 pms_sku_info
        List<Skus> skus = vo.getSkus();
        if (skus.size() > 0 && skus != null) {
            skus.forEach(item -> {
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                skuInfoService.saveSkuInfo(skuInfoEntity);
                Long skuId = skuInfoEntity.getSkuId();
                List<SkuImagesEntity> skuImagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity -> {
                    //返回true就是需要，false就是剔除 没有图片路径的无需保存
                    return StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                //6.2 sku的图片信息 pms_sku_images
                skuImagesService.saveBatch(skuImagesEntities);
                //TODO:没有图片路径的无需保存
                //6.3 sku的销售属性信息 pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);
                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);
                //6.4 sku的优惠、满减信息 gulimall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.error("远程保存spu优惠、满减信息失败");
                    }
                }
            });
        }

    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("id", key).or().like("spu_name", key);
            });
        }
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)) {
            wrapper.eq("publish_status", status);
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)) {
            wrapper.eq("catalog_id", catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params), wrapper
        );

        return new PageUtils(page);
    }

    /**
     * 商品上架
     *
     * @param spuId
     */
    @Override
    public void up(Long spuId) {
        //1.查出当前spuid对应的所有的sku信息，品牌的名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        //List<Attrs>attrs, attrId,attrName,attrValue
        //TODO:4.查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baselistforspu = productAttrValueService.baselistforspu(spuId);
        List<Long> attrIds = baselistforspu.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrIds);
        List<SkuEsModel.Attr> attrList = baselistforspu.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attr attr = new SkuEsModel.Attr();
            BeanUtils.copyProperties(item, attr);
            return attr;
        }).collect(Collectors.toList());
        Map<Long, Boolean> stockMap = null;
        try {
            //TODO:1.发送远程调用，库存系统查询是否有库存
            R skuHasStock = wareFeignService.getSkuHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {
            };
            if (skuHasStock != null && !skuHasStock.isEmpty()) {
                stockMap = skuHasStock.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, SkuHasStockVo::getHasStock
                ));
            }
        } catch (Exception e) {
            log.error("库存服务查询异常：原因{}", e);
        }
        //2.封装每个sku信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            //组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);
            // skuPrice,skuImg,
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            //hasStock,hotScore,
            //设置库存信息
            if (finalStockMap != null) {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            } else {
                esModel.setHasStock(true);
            }
            //TODO:2.热度评分。 0
            esModel.setHotScore(0L);
            //TODO:3.查询品牌和分类的名字信息
            //brandName,brandImg,catalogName,
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());
            CategoryEntity categoryEntity = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(categoryEntity.getName());

            //设置检索属性
            esModel.setAttrs(attrList);
            return esModel;
        }).collect(Collectors.toList());
        //TODO:5.将数据发送给es进行调用
        R r = searchFeignService.productStatusUp(upProducts);
        if (r.getCode() == 0) {
            //远程调用成功
            //TODO:6.修改spu的状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        } else {
            //远程调用失败
            //TODO:7.重复调用?接口幂等性；重试机制
            //Feign调用流程
            /**
             * 1.构造请求数据，将对象转为json；
             * RequestTemplate template = this.buildTemplateFromArgs.create(argv);
             * 2.发送请求进行执行（执行成功会解码响应数据）
             * executeAndDecode(template, options);
             *3.执行请求会有重试机制
             * while(true){
             *     try{
             *     executeAndDecode(template, options);
             *     }catch(){
             *     try{
             *     retryer.continueOrPropagate(e)
             *     }catch(){
             *     throw ex;}
             *     continue;
             *     }
             * }
             */
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        Long spuId = skuInfoEntity.getSpuId();
        SpuInfoEntity spuInfoEntity = this.getById(spuId);
        return spuInfoEntity;
    }


}